CVE-2026-35009 Open ISES Tickets < 3.44.2 Reflected XSS via add_note.php ticket_id Parameter
Authenticated attackers can inject arbitrary JavaScript via the ticket_id parameter in add_note.php, leading to script execution in victim browsers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-35009?
CVE-2026-35009 is a medium-severity cross-site scripting vulnerability in openises tickets, published on 20 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Open ISES Tickets before 3.44.2 contains a reflected cross-site scripting vulnerability in add_note.php that allows authenticated attackers to inject arbitrary JavaScript by passing an unsanitized value through the ticket_id GET parameter directly into a hidden input field VALUE attribute. Attackers can craft a malicious URL containing a JavaScript payload in the ticket_id parameter that executes in the victim's browser when the URL is visited.
Weakness: CWE-79
Which versions are affected by CVE-2026-35009?
How do I fix CVE-2026-35009?
No fix has been published for CVE-2026-35009 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-35009 being exploited?
There is no known exploitation of CVE-2026-35009 in the wild and no public exploit code.
Sources
Also known as GHSA-qvvw-c5vm-j9c8.